Filament-mounting.



E. S. GARDNER. FILAMENT HUUN'IING. APPLrcA'rms mum mso. nv. 1910,

Patentsd Mm. 10, 219ML M m Wm ,ma m G m 5 L m E L .D

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time1 EDGAR S. GARDNER, OlE ACQUACKANONCIL NEW JERSEY, ASSIGNOR T0GENiRL ELECTRIC COMPANY, A CORPOR'ILION OF NEW YORLK.

znoennse.

Specification of Letters Patent.

Patented lli'ar. itt), 19M.

application and :December e7, 1910. serial no. tease?.

Tc all whom t may concern Be it known that I, EDGAR S. G-Annn'rn, acitizen of the UnitedStates, residing at Acquaclnindnch, county ofPamaio, Stato of New Jersey, have invented certain new and usefullimprovements in Filament Mountings, of which `the following is aspecifica tion.

My invention relates to ilament mounting, and its object is an improvedmounting' which possesses various desirable characteristics and issuitable for filaments and other conductor?.

Among the advantages `which may be sccured 'in a mounting constructedaccording to my invention are the following: first, the mounting of agreat length of' conductor in a small space; seccnd, reduction o'f therisk of short-cixeuiting; third, operation ofy the apparatus with theabove advantages in any position, adaptation Afor service in which it issubject to vibration and shocks, and longer life.

Other advantages will hereinafter appear.

My invention is especially useful in incan descent filament electriclamps; and 'I have hereinafter particularly described a constructionembodying it that is well suited 'for this purpose, referring to theconductor with which it is used as a filament and to the ap g paratus inwhich it is employed as a lamp. 'l`ho invention cau, however, beotherwise carried out and applied. It' may be used for the mounting offilaments of tant-alum, tung; sten, or any refractory metals ormaterials.

lhe accompanying drawing gives a perspective view of one embodiment ofthe iul vention, the sume being shown as broken I nn'ay 'from the globeand removed therefrom l :for the salie of clearncss of illustration. Toavoid confusion, portions of lilament in liront of a median planethrough the mount. are shown in full lines and portions to the rear oisuch a plane in dotted lines.

The filament system or mount here shown comprises a plurality ot'filament-carrying elements or arms of iron, nickel, copper, molybdenum,or other suitable material (due regard for thc material of the filamenthe ing ot' course had in the selection of the material of the arms)having suitable filament engaging portions and projecting from suplporting means consisting of a member or standard 'S and a suitablemember or base D towhieh said member orstanelard S is attached. Thesemembers La and l) may be regarded as constituting n. single supportingmember M. 'lhe member or base .D muy conveniently be a suitable fixedpart of the general lamp structure,and, in particular,- the ordinaryglass stem through `which the current-supply conductors t, l are introAduced into the lamp. The engaging por tions of the filament-supportingarms or carl riens do not all project tiresome distance from the memberM; and in the drawing the carriers (a and Z) respectively) which lietoward each end of the lilannmt system are shown as varying :ni-longthemselves as reards pinjection of their engaging portions trom themember M. Furthermore, these carriers a and l) are shown ns formingsuitably separated groups or sets A and l5, respectively; and successivecarriers of both groups which extend radially l rom the mcmber S areshown as diiiiering in character as regards projection ol their engagingportions from the member S, and, specifically, as relatively long am`short alternately. When the system is viewed cud ou, thefilamentcngaging portions"` of these carriers appear as staggered.Witlrthe exccption ol" the carriers o, and a2., of Group A 'formedhyper-tions ol the leadiuggin wires Z, extending within lhc lamp globe,nil the carrying elements oli each group are shown as projecting from arelatively narrow zone in thc length oli thc member S; und, in fact, usbeing' 'fused into glass enlargements or disks on the said member S.'lhe short curricrs ol cach group muy advantageously make somewhatsmaller angles with the memher ci -than do the long carricrs,as shown inthe drawing.

(')u thc supporting svstcm :irc arranged the lilumcul lengths orscctiom4 j', shown us slightly "crimped" From its connection with theend l of the lclil-haml current leali which lorms the carrier ffl, thelilamcut extends' upward to the engaging portion .3 ol' :1 long;rcarrier or holder la, thence downward to a long carrier (1 thcuco upwardlo u short carrier by, thence downward to :l .short carrier am thencel'ipn'ardaro long' carrier hw thence downward lo alongr carrier (IT,thence upward to a short carrier bs, ctc., passing finally downward-from, the cngug ing portion 2l oi the short carrier (2 to the engaging;portion olf the carrier a2, formed by the right-hand current lead andbeing suitably connected thereto. To avoid confusion of referencecharacters, only the carriers above mentioned are marked with. theirappropriate subscript letters on the drawing; but the engaging portionsof all 'the carriers are mar-lied with their proper reference numeralsl, 2., -Ql, 24, 25, yin order that the filament may be easily followedthrough `its entire length. lt will he understood that the engaging`portions of the variouscarriers may have the 'form of open hooks whilethe lilament is being applied to the system and that suoli hooks mayafterward be closed to form eyes; also that the carriers .may oe loentand manipulated alter the ilament has been placed on them, and th attheir original angles with the member M may be altered so as to bringthe ila nient sections to a proper degreeof tautness,

ete; llfhen nnnioer of sections are oom'- lo'rised in one continuouspiece of filament (as in the speeilie mount illustrated), thearrangement of the long` Carriers of a group so as to malte a greaterangle with the meniber S than do the short carriers facilitates theapplication of the filament' to the systern by making it unnecessary tocarry the iiainentnn (or down) between two long carriers in order toplace it in the hooli of a short Carrier.

' t will loe observed that in the mount hereinhoilore specificallydescribed and illus.- tintedi neighboring ones of the set-of fila.- mentsections have hoth a. component ol relative inclination. in the'direction of the general sweep of the successive lilament see tions anda Component of relative inclination in lateral direction with referenceto the genera; sweep of the sectionsithis lat direction being in eachoase afpg'rox mately Ieoirmidernb with a radial direction with referenceto the niemeer lf the lila .aient sections were arranged in acylindrical or conical surface of some sort, only the tiret-namedconiponeatoii relative inclination in the direction oi.' the generalsweep of the successive sections 'would exisj. lt fol lo'ws that fortlie saine number of filament sections and approximately the samegeneral dimensions, neighboring sections will diverge more and be betterseparated in my gresent type of mount than in one of the typejustmentioned. .Hence the risk of short cireuit through the eomingtogether of neighboring filament sections from any censo will he less inmy present type oL mount and the average lifeof the lamp will loecorrespondingly longer, This means that tor the same general dimensionsmy present' type of mount allows a, Lgreater number of filament sectionsto he used Withouthunsa'fe proximity netween neighboring sections andthat 'in consequence a greater total length. ont filament can safely bemounted in the same siaee.,

-when the first'seotion under eonsideratioe "e ,l of suitable supportingnieroloer and e. nlnmeente ln the type olii filament system shownv indrawing, z staggered arrangement oli elle ilamentengaging ortious of thecarrying elements at one on at least, o the system will always be foundvery advantageous; and in systems in which. a Anumber of seotio'ns arecomprised in a single eontiruwus piece of filament (as also shown inFig. l), suoli a staggered arrangement will 1oca-found desirable at bothends ofthe system.

l'Vhat I claim neuT and desire 'to secure by 'Letters Patent of theUnited States, is,-

l. ln an incandescent lamp, the combinan tion of a central supportinostem, a plurality of groups of alternately. long andshort la' mentcarriers mounted on said stem, a oon-- tinuous filament extending boel;and forth between the carriers of said groups in s plurality ofsections, filament sentient' edia-oent to a carrier of one group5extending to een riers of the other group which elifer 'from one anotherin length.

:2. ln a, ilainent system the oomliination or" a central supportingstein, two suitably spaced groups of jilament joerrierey mountedthereon, the engaging ortione of the een riers of eaoli groupfoemgalternately gela tively long and relatively short distances from saidsupgmrti'ntestern; a continuous lef ment ymounted on said oarriers in e,plurality of sucssive sections in suela manner that pareil-:l with saidsupporting stem7 the s. ond section torrone en angle therewitlnvthirelfseetion is parallel with. said support fourth seetion en f wiereverse to the angle of seid second'seo-u rion with respect to saidsupporting stenil 3. ln a lainent n'ionn the eoinhinetion Elli? raiityil carriers at eee@ end of the mount alternately projecting 4vrelatiielylongfand relatively short distances radially from said niemeer, and sfilament extending haelt and forth in a plurality or lengtes troni oneend 0;?? the mount to theol 'on' seid eerriers, the filament afterpassing from a long earrier at one end of the-mount to a long een' rierat the other extending in successive lengths loa-ok again toeesliorterrier'at the end .of the mount first referred to, therefrom this shortcarrier to a short cerrier at the other end7 then loa-cl; yet again to along earrie'r at the end of the mount first referred to, in furtherlengths treyer-sing,r long and short carriers in like order ofsuccession.

e. ln a ilainent mount, the combination of two separated groups ofoarriersradiating from a supporting member.l the carriers of each groupbeing relatively long and relatively short alternately,1and ailamentextending; bac-,k and forth between the can' riers oft' the two groupsin a'plurality ot lengt-hs, lengths extending lieta/een long ear riersin the respective fron s and lengths so @monding hotwcon the shortCun-icm :uljnuont: to such 1onr cm1-ners hnylng' thaw opponto endsdnctly connected by lengths which @Xlvnd from n long carrier of one'reference-t0 said, member, and the short our! .Piers of each groupmaking smalle' angles with the supporting momhm' thun lo J ho long;cnrriorwso ns to fawillluto the Stringing; of the llzummt.

In witness whoreol, I h-(xve lwrouhto sot :nyhalml this 23d doy of,1)0n'c111ho1', lll). EDGAR (A-lliDlx' Ell. lVtncsSs N. Wuxi-laluclxn,J. ll. EMUNS.

